We have a large cowboy-style dinner bell hanging in our kitchen. We let the kids take turns ringing it to signal mealtime or another gathering in the kitchen. If they are ringing it to signal the start of a meal, we usually have them yell “COME AND GET IT!” at the same time, which adds a little bit of fun.
The kids LOVE their turn for ringing the bell and can earn it by being ready for mealtime, helping in the kitchen, or other good behavior. I usually give the bell-ringing privilege to whoever sets the table. It has become a really great tradition for our family.